LEFT

LEFT 1:

The function LEFT returns the left, initial string for a given string.
LEFT (STR, SIZE) means: Take the first SIZE character from the left in the string STR.

FUNCTION LEFT: STRING (255)

VAR_INPUT
    STR  : STRING(255);
    SIZE : INT;
END_VAR

Example in IL:

LD 'SUSI'
LEFT 3
ST Var1 (* Result is 'SUS' *)

Example in ST:

Var1 := LEFT ('SUSI',3);

Requirements

Development environment

Target platform

PLC library to include

TwinCAT v3.0.0

PC or CX (x86)

Tc2_Standard